JP2009248612A - Accelerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an accelerator for certainly enabling a driver to sense a damage of a biasing means by certainly reducing a force on pedal when apart of the biasing means is damaged. <P>SOLUTION: A holder 90 relatively movably abuts on a spring rotor 70 provided at ends on sides of first and second coil springs 41, 45 of an accelerator pedal 2. A regulation means 5 regulates a movable area of the holder 90 with respect to the spring rotor 70 in a side of an axis of rotation O of the accelerator pedal 2 from an abutting point P between the spring rotor 70 and the holder 90. The shortest distance L1, L2 between a point of action Q in which a biasing force of the first and second coil springs 41, 45 is impressed to the spring rotor 70 and the axis of rotation O is made not longer than the shortest distance L between the abutting point P and the axis of rotation O. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an accelerator device for a vehicle.

  2. Description of the Related Art Conventionally, there is known an accelerator device that is mounted on a vehicle and controls a driving state of the vehicle in accordance with an accelerator pedal depression amount by a driver. In such an accelerator device, as shown in Patent Document 1, an accelerator pedal that is depressed by a driver is rotatably supported by a support member, and the accelerator pedal is rotated in a direction opposite to the depression direction of the accelerator pedal by a spring. Energized. The urging force of the spring is transmitted to the rotor provided at the end on the opposite side of the accelerator pedal stepping portion through the holder. When the depression force on the depressed accelerator pedal is released, the accelerator pedal can be returned to the original position by the biasing force of the spring.

The rotation angle of the accelerator pedal is detected by a sensor, and the rotation angle signal detected by the sensor is transmitted from the signal extraction unit of the accelerator device to the engine control device (ECU) of the vehicle.
However, in such an accelerator device, as shown in FIG. 16, when a part of the plurality of springs 104 urging the accelerator pedal 102 is broken, the urging force of the springs 104 is not uniformly transmitted to the holder 109, The holder 109 may be tilted with respect to the expansion / contraction direction of the 104, and the holder 109 and the inner wall of the housing 103 may come into sliding contact. When the holder 109 and the inner wall of the housing 103 are slidably contacted to generate a frictional force, the frictional force acts as a resistance to the rotational movement of the accelerator pedal 102, and the amount of decrease in the pedaling force when the driver depresses the accelerator pedal 102 is reduced. To do. Therefore, the difference between the pedaling force before the spring 104 is partially damaged and the pedaling force after the spring 104 is partially damaged becomes small, and the driver may not be able to detect that the spring 104 is partially damaged. If the driver continues to use without detecting the partial breakage of the spring 104 and the spring 114 on the non-damaged side is also broken, the accelerator pedal 102 will not return properly, and the engine will blow up unintended by the driver. There is a fear.

International Publication No. 2006/100133 Pamphlet

  An object of the present invention is to provide an accelerator device that reliably reduces the pedaling force when a part of the urging means is broken, and allows the driver to reliably detect the breakage of the urging means.

  According to the first aspect of the present invention, the accelerator pedal that is depressed by the driver is rotatably supported by the support member that can be attached to the vehicle body. The urging means has one end locked to the support member and urges the accelerator pedal in a direction opposite to the stepping direction of the accelerator pedal. The holder engages the other end of the urging means and abuts against a rotor provided at an end of the accelerator pedal on the urging means side so as to allow relative movement. The restricting means is provided between the contact point between the rotor and the holder and the rotation axis of the accelerator pedal, restricts the movable range of the holder with respect to the rotor, and rotates with the application point where the urging force of the urging means is applied to the rotor. The shortest distance between the axis and the axis is equal to or less than the shortest distance between the contact point and the rotation axis.

For this reason, when a part of the urging means is damaged, the pedaling force by which the driver depresses the accelerator pedal is equal to or less than the pedaling force by the urging force of the urging means on the side that is not damaged. Thereby, the accelerator apparatus can make a driver | operator surely detect the failure | damage of a biasing means.
According to the second aspect of the present invention, the restricting means is provided on both sides of a plane that passes through the contact point between the rotor and the holder and is perpendicular to the rotation axis of the accelerator pedal. When a part of the urging means is broken and the holder tilts to one side with respect to this plane, the restricting means on the other side can restrict the movable range of the holder.

According to a third aspect of the present invention, the restricting means comprises a hook provided on one of the rotor and the holder and a rod provided on the other. Thereby, the range in which the holder can move with respect to the rotor can be regulated with a reliable and simple configuration.
According to the invention of claim 4, the restricting means restricts the range in which the holder can move relative to the rotor when a part of the urging means is damaged. For this reason, the accelerator device can reliably reduce the pedaling force when a part of the urging means is broken, and can surely detect the breakage of the urging means.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
The accelerator apparatus by 1st Embodiment of this invention is shown in FIGS. The accelerator device 1 is mounted on a vehicle and controls the driving state of the vehicle according to the amount of depression of the accelerator pedal 2 by the driver. The accelerator device 1 of the present embodiment employs an accelerator-by-wire system, and the accelerator pedal 2 is not mechanically connected to a vehicle throttle device. Instead, the accelerator device 1 transmits the rotation angle of the accelerator pedal 2 to the engine control device (ECU) of the vehicle, and the ECU controls the throttle device based on the rotation angle.

A basic configuration of the accelerator apparatus 1 will be described with reference to FIGS. 2 and 3.
The housing 3 as a support member is formed in a box shape with resin, and includes a bottom plate 11, a top plate 12 facing the bottom plate 11, and two side plates 13 and 14 facing each other perpendicular to the bottom plate 11 and the top plate 12. The bottom plate 11 is fixed to the vehicle body with bolts or the like.

  The side plate 13 has a bearing hole 131 and a sensor support hole 132. The bearing hole 131 and the sensor support hole 132 communicate with each other and communicate from the inner wall of the side plate 13 to the outer wall. The bearing hole 131 and the sensor support hole 132 are formed in a substantially cylindrical shape. The inner diameter of the bearing hole 131 is smaller than the inner diameter of the sensor support hole 132. Therefore, a step portion 133 is formed between the bearing hole 131 and the sensor support hole 132. The sensor support hole 132 accommodates the rotation angle sensor 30. The rotation angle sensor 30 is sandwiched between the stepped portion 133 and the cover 15, and is prevented from dropping from the sensor support hole 132. A connector 16 in which a terminal (not shown) that is electrically connected to the rotation angle sensor 30 is embedded is provided on the outer wall of the side plate 13.

The side plate 14 has a substantially cylindrical bearing hole 141. The central axes of the bearing hole 141 and the bearing hole 131 are the same as the rotation axis O of the accelerator pedal 2.
As shown in FIGS. 1 to 3, the accelerator pedal 2 includes a pedal arm 50, an operation unit 40, a pedal rotor 60, a spring rotor 70, and a shaft member 80. The pedal arm 50, the operation unit 40, and the pedal rotor 60 are integrally formed of resin. An operation unit 40 is provided at the end of the pedal arm 50 on the side opposite to the rotating shaft, and is operated by the driver to step on the pedal.

The pedal rotor 60 has a large-diameter hole 61 that leads the pedal rotor 60 from one end to the other end in the direction of the rotation axis O. The large diameter hole 61 is formed in a substantially cylindrical shape.
The shaft member 80 is formed of a resin in a substantially cylindrical shape, and is inserted into the large diameter hole 61 of the pedal rotor 60. The shaft member 80 has one end 81 supported by the bearing hole 131 and the other end 82 supported by the bearing hole 141. A groove 83 is formed in the outer peripheral wall of the shaft member 80. The pedal rotor 60 is provided with a protrusion 64 that protrudes inwardly of the large-diameter hole 61. The protrusion 64 engages with the groove 83 of the shaft member 80. As a result, the pedal rotor 60 is rotatably supported with the shaft member 80 about the rotation axis O with respect to the housing 3.

  The end portion 81 of the shaft member 80 is formed in a substantially cylindrical shape and opens toward the rotation angle sensor 30 side. Magnet portions 84 and 85 having different polarities are embedded at two locations in the circumferential direction across the rotation axis O of the inner peripheral wall of the end portion 81. The direction of the magnetic field formed by the two magnet portions 84 and 85 changes according to the rotation angle of the shaft member 80. The rotation angle sensor 30 includes a Hall element or a magnetoresistive element at the tip of the cylindrical portion 31 protruding toward the shaft member 80 side, and detects a magnetic field formed by the magnet portions 84 and 85. The rotation angle sensor 30 outputs a detection signal to an ECU that is electrically connected to a terminal (not shown). This detection signal represents the rotation angle of the shaft member 80, that is, the rotation angle of the accelerator pedal 2.

  A spring rotor 70 as a rotor includes an annular rotating portion 71 and a protruding portion 74. The rotating part 71 and the protruding part 74 are integrally formed of resin. The rotation unit 71 has a rotation hole 72 that communicates from one end to the other end in the direction of the rotation axis O of the rotation unit 71. The rotating part 71 makes the rotating hole 72 and the large diameter hole 61 coaxial, and contacts the pedal rotor 60 in the rotating shaft direction. The spring rotor 70 is rotatable about the rotation axis O by inserting the shaft member 80 through the rotation hole 72.

  A plurality of helical teeth 73 are provided on the outer wall of the rotating portion 71 on the pedal rotor 60 side. The plurality of helical teeth 73 are arranged at equal intervals around the rotation axis O. A plurality of helical teeth 65 are provided on the wall surface of the pedal rotor 60 on the rotating portion 71 side. The plurality of helical teeth 65 are arranged at equal intervals around the rotation axis O and mesh with any of the helical teeth 73 facing in the direction of the rotation axis O. By this meshing, the pedal rotor 60 and the spring rotor 70 rotate together. A friction washer 32 is interposed between the wall surface of the rotating portion 71 on the side plate 14 side and the wall surface of the side plate 14 on the rotating portion 71 side. The friction washer 32 is fixed to the side plate 14 so as not to rotate, and slidably contacts the rotating portion 71 to generate a frictional force. A groove 66 is formed on the side plate 13 side of the pedal rotor 60, and an annular friction ring 67 is press-fitted into the groove 66. The friction ring 67 is in sliding contact with the side plate 13 to generate a frictional force.

The protruding portion 74 is provided so as to protrude in the radial direction from the outer peripheral edge portion of the rotating portion 71. The protrusion 74 forms a convex surface 75 having a curved surface on the top 12 side.
The holder 90 is formed in a substantially disk shape with resin. The holder 90 forms a concave surface 91 having a curved surface formed with a radius of curvature larger than that of the convex surface 75 on the protruding portion 74 side. The concave surface 91 and the convex surface 75 of the spring rotor 70 abut at a contact point P so as to be capable of relative movement.

  The holder 90 is provided with a spherical projection 92 that projects spherically toward the top plate 12 on the surface on the top plate 12 side, and annular locking surfaces 94 and 95 are formed on the outer peripheral side of the spherical projection 92. The housing 3 is provided with a spherical protrusion 121 that spherically protrudes toward the holder 90 on the inner wall surface of the top plate 12, and annular locking surfaces 123 and 124 are formed on the outer peripheral side of the spherical protrusion 121.

  The urging member 4 includes a first coil spring 41 and a second coil spring 45. One end 42 of the first coil spring 41 is locked to the locking surface 123 of the top plate 12, and the other end 43 is locked to the locking surface 94 of the holder 90. The second coil spring 45 has an inner diameter smaller than the outer diameter of the first coil spring 41 and is provided on the inner peripheral side of the first coil spring 41. The second coil spring 45 has one end 46 locked to the locking surface 124 of the top plate 12 and the other end 47 locked to the locking surface 95 of the holder 90.

The first coil spring 41 and the second coil spring 45 are compressed and accommodated between the surface on the top plate 12 side of the holder 90 and the inner wall surface of the top plate 12, and the pedal arm 50 and the spring rotor 70 rotated in the stepping direction. The urging is performed in the direction opposite to the stepping direction through the holder 90.
When the spring rotor 70 performs an arc motion around the rotation axis O, the holder 90 comes into contact with the spring rotor 70 so as to be capable of relative movement at the contact point P. Therefore, the first and second coil springs 41 and 45 are linear. Can perform a flexible telescopic movement.

  As shown in FIGS. 4 and 6, the restricting means 5 includes hooks 51 and 52 and rods 53 and 54. The hooks 51, 52 are extended portions 55, 56 that extend to the side opposite to the holder 90 at the bottom portion 96 of the holder 90, and locking that extends from the end of the extension portion 55 on the side opposite to the holder toward the rotating portion 71 of the spring rotor 70. And portions 57 and 58. The rods 53 and 54 are formed to extend in parallel with the rotation axis O on both wall surfaces of the protrusion 74 on the rotation axis O side.

  There are predetermined gaps between the bottom portion 96 of the holder 90 and the rods 53 and 54, between the rods 53 and 54 and the locking portions 57 and 58, and between the rods 53 and 54 and the extension portions 55 and 56. . These predetermined gaps are generated when the holder 90 moves relative to the spring rotor 70 during normal use of the accelerator device 1 in which neither the first coil spring 41 nor the second coil spring 45 is damaged. 53 and 54 and the hooks 51 and 52 are not in contact with each other. A predetermined gap is provided between the bottom 96 of the holder 90 and the curved surface 76 of the protrusion 74. This is a size in which the holder 90 and the bending portion 76 do not contact each other.

  The hooks 51 and 52 correspond to the rods 53 and 54, respectively, and are formed on both wall surfaces of the protrusion 74 on the rotation axis O side. For this reason, when either one of the first coil spring 41 and the second coil spring 45 is damaged and the holder 90 is inclined toward the hook 51 and the rod 53 side, the locking portion 58 of the hook 52 and the rod 54 come into contact with each other. On the other hand, when the holder 90 is inclined toward the hook 52 and the rod 54, the locking portion 57 of the hook 51 and the rod 53 come into contact with each other.

  The hooks 51 and 52 and the rods 53 and 54 are provided between the contact point P and the rotation axis O. For this reason, when one of the first coil spring 41 and the second coil spring 45 is damaged and the holder 90 tilts toward the counter-rotating portion 71 side of the contact point P, the locking portion 58, the rod 54, and the locking portion At least one of 57 and rod 53 abuts.

  When the holder 90 tilts toward the rotating portion 71 side of the contact point P, none of the locking portions 57 and 58 and the rods 53 and 54 contact, and the curved surface 76 and the holder 90 contact. At this time, the hooks 51 and 52 are provided so as to sandwich both wall surfaces of the protrusion 74 on the rotation axis O side, so that the movable range of the holder 90 relative to the spring rotor 70 can be restricted.

Next, the general operation of the accelerator apparatus 1 will be described with reference to FIGS.
Before the driver steps on the accelerator pedal 2, the accelerator pedal 2 is urged by the first and second coil springs 41, 45 in the direction opposite to the stepping direction, and is formed on the contact portion 68 and the top plate 12. The stopper 125 comes into contact.
When the driver applies a pedaling force to the accelerator pedal 2 and the accelerator pedal starts to rotate in the X direction, the helical teeth 65 and the helical teeth 73 mesh with each other, and the pedal rotor 60 and the spring rotor 70 rotate together. The rotation angle sensor 30 detects the rotation angle of the shaft member 80 that rotates integrally with the pedal rotor 60 based on the magnetic field formed by the magnet portions 84 and 85. A detection signal detected by the rotation angle sensor 30 is transmitted to the ECU.

  As the driver rotates the accelerator pedal 2 in the X direction and the rotation angle of the accelerator pedal 2 increases, the coil spring 4 is compressed and the urging force Fsp applied to the accelerator pedal 2 is increased. At this time, since the pedaling force F and the spring biasing force Fsp have a relationship of F = Fsp × L / Lp, the pedaling force F increases in proportion to the biasing force Fsp of the first and second coil springs 41 and 45. . For this reason, the pedal effort F increases as the rotation angle of the accelerator pedal 2 increases. Here, Lp represents the distance between the application point of the pedaling force F and the rotation axis O, and L represents the distance between the contact point P and the rotation axis O.

  A thrust force is generated by the stepping force F and the urging force Fsp in a direction that separates each other in the direction of the rotation axis O between the helical teeth 65 of the pedal rotor 60 and the helical teeth 73 of the spring rotor 70. By this thrust force, a frictional force f1 is generated between the friction ring 67 and the side plate 13 of the pedal rotor 60, and a frictional force f2 is generated between the spring rotor 70 and the friction washer 32. For this reason, the frictional forces f1 and f2 increase as the rotation angle of the accelerator pedal 2 increases. Since the frictional forces f1 and f2 act as resistance to the rotational movement of the accelerator pedal 2, the pedaling force F is increased when the driver rotates the accelerator pedal 2 in the X direction.

When the driver further rotates the accelerator pedal 2 in the X direction, the contact portion 69 and the stopper 111 formed on the bottom plate 11 contact each other. Thereby, rotation of the accelerator pedal 2 is restricted.
On the other hand, when the driver rotates the accelerator pedal 2 in the Y direction, the frictional forces f1 and f2 that act as resistance to the rotational movement of the accelerator pedal 2 reduce the pedaling force F.

As described above, the accelerator device 1 uses the frictional forces f1 and f2 that change in magnitude depending on the rotation angle of the accelerator pedal 2, and thus the pedaling force F when the accelerator pedal 2 rotates in the X direction and the pedaling force F when the accelerator pedal 2 rotates in the Y direction. A predetermined hysteresis characteristic is provided by changing the size of. For this reason, the accelerator apparatus 1 can obtain a favorable operation feeling.
Next, the operation when part of the first and second coil springs 41 and 45 of the accelerator device 1 is damaged will be described with reference to FIGS.

In the present embodiment, the operation when the first coil spring 41 is damaged will be described as an example.
When the first coil spring 41 is damaged and the holder 90 is tilted in the direction 100 of FIG. 6, as shown in FIG. 7, the locking portion 57 of the hook 51 and the rod 53 come into contact with each other, and the locking portion 58 of the hook 52. And the rod 54 abut.

  At this time, a force directed to the holder 90 side that restricts the movement of the holder 90 acts on the rods 53 and 54. Therefore, the operating point Q at which the second coil spring 45 that is not damaged applies the biasing force Fsp to the spring rotor 70 via the holder 90 is at the same position as the contact point P. Therefore, the shortest distance L1 between the action point Q and the rotation axis O is the same as the shortest distance L between the contact point P and the rotation axis O. As a result, the pedaling force F (F = Fsp × L1 / Lp) when the first coil spring 41 is damaged is a set pedaling force (F = Fsp × L / L) by the biasing force Fsp of only the second coil spring 45 that is not damaged. Lp).

When the holder 90 is tilted in the direction 100 of FIG. 6 or between the directions 100-200, the locking portion 57 of the hook 51 and the rod 53 come into contact with each other as shown in FIG. The locking portion 58 of the hook 52 and the rod 54 do not contact each other.
At this time, a force directed to the holder 90 side that restricts the movement of the holder 90 acts on the rod 53. Therefore, as in the case where the holder 90 is tilted in the direction 100 of FIG. 6, the action point Q is at the same position as the contact point P, and the shortest distance L1 between the action point Q and the rotation axis O is the contact point P. This is the same as the shortest distance L from the rotation axis O. As a result, the pedaling force F when the first coil spring 41 is damaged is the same as the set pedaling force by the biasing force Fsp of only the second coil spring 45 that is not damaged.

When the holder 90 tilts in the direction 300 in FIG. 6 or in the direction 100-300, the locking portion 58 of the hook 52 and the rod 54 come into contact with each other. The locking portion 57 of the hook 51 and the rod 53 do not contact each other.
In this case as well, the pedal force F when the first coil spring 41 is damaged is the set pedal force by the urging force Fsp of only the second coil spring 45 that is not damaged, as in the case where the holder 90 is tilted in the direction 100 of FIG. It will be the same.

  When the holder 90 is tilted in the direction 200-400-300 in FIG. 6, as shown in FIG. 8, the holder 90 comes into contact with the contact point P and the contact point P1. For this reason, the action point Q is an intermediate position between the contact point P and the contact point P1. Therefore, the shortest distance L2 between the action point Q and the rotation axis O is smaller than the shortest distance L between the contact point P and the rotation axis O. As a result, the pedaling force F (F = Fsp × L2 / Lp) when the first coil spring 41 is damaged is the set pedaling force (F = Fsp × L / L) by the urging force Fsp of only the second coil spring 45 that is not damaged. Lp).

FIG. 9 shows hysteresis characteristics of the accelerator device 1 according to the present embodiment.
A dotted line i represents a hysteresis characteristic when neither the first coil spring 41 nor the second coil spring 45 is damaged.
A solid line ii represents a hysteresis characteristic when the holder 90 is tilted between the direction 200, the direction 300, or the direction 200-100-300. At this time, since L = L1, the hysteresis characteristic ii when the first coil spring 41 is damaged is the same as the set hysteresis characteristic by the urging force Fsp of the second coil spring 45.

  An alternate long and short dash line iii represents a hysteresis characteristic when the holder 90 is tilted in the direction 200-400-300. At this time, since L> L2, the hysteresis characteristic iii when the first coil spring 41 is broken shows a pedaling force smaller than the set hysteresis characteristic by the urging force Fsp of only the second coil spring 45.

On the other hand, in the conventional accelerator apparatus 101 shown in FIG. 16, when the spring 115 is damaged, the holder 109 and the inner wall of the housing 103 are brought into sliding contact to generate a frictional force.
The hysteresis characteristics of this conventional accelerator device 101 are shown in FIG. A two-dot chain line iv indicates a hysteresis characteristic when the spring 115 is broken and the holder 109 and the housing 103 are in sliding contact with each other. In the conventional accelerator apparatus 101, the hysteresis characteristic iv when the spring 115 is broken indicates a pedaling force having a larger pedaling force than the set hysteresis characteristic v due to the biasing force Fsp of the spring 114.

  In the accelerator device 1 according to the first embodiment, the restricting means 5 restricts the movable range of the holder 90 relative to the spring rotor 70, so that the holder 90 does not slide on the inner wall of the housing 3. For this reason, the accelerator apparatus 1 can prevent the pedal effort when either one of the first and second coil springs 41 and 45 is damaged from becoming larger than the set pedal effort.

  Further, since the accelerator device 1 is provided with the regulating means 5 between the contact point P and the rotation axis O, the shortest distances L1 and L2 between the action point Q and the rotation axis O are set to the contact point P and the rotation axis. The shortest distance L to O can be made shorter than or equal to L. For this reason, the accelerator apparatus 1 makes the pedaling force when one of the first and second coil springs 41 and 45 breaks below the set pedaling force by either one of the first and second coil springs 41 and 45. be able to. As a result, the driver can sense that one of the first and second coil springs 41 and 45 is damaged.

(Second Embodiment)
An accelerator device according to a second embodiment of the present invention is shown in FIGS. Components substantially the same as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
In the second embodiment, the restricting means 6 includes hooks 511 and 521 provided on the spring rotor 70 and rods 531 and 541 provided on the holder 90. The hooks 511 and 521 and the rods 531 and 541 are provided between the contact point P and the rotation axis O.

  The hooks 511 and 521 are provided with first extension portions 555 and 565 extending in parallel with the rotation axis on both wall surfaces of the protrusion 74 on the rotation axis O side, and the direction of the holder 90 from the ends of the first extension portions 555 and 565. The second extension portions 551 and 561 extending inward and the locking portions 571 and 581 extending in the direction of the rotating portion 71 from the end of the second extension portions 551 and 561 on the side opposite to the first extension portion are integrally formed. The

The rods 531 and 541 correspond to the hooks 511 and 521 and are formed to extend in parallel with the rotation axis O on both wall surfaces of the holder 90 on the rotation axis O side.
In the accelerator device of the second embodiment, an operation when a part of the first and second coil springs 41 and 45 is damaged will be described. In the present embodiment, the case where the first coil spring 41 is damaged will be described as an example.

When the first coil spring 41 is damaged and the holder 90 is tilted in the direction 100 of FIG. 11, the locking portion 571 of the hook 511 and the rod 531 come into contact with each other as shown in FIG. And the rod 541 abut.
At this time, the force toward the anti-spring rotor 70 side that restricts the movement of the holder 90 acts on the hooks 511 and 521. Therefore, the operating point Q at which the second coil spring 45 that is not damaged applies the biasing force Fsp to the spring rotor 70 via the holder 90 is at the same position as the contact point P. Therefore, the shortest distance L1 between the action point Q and the rotation axis O is the same as the shortest distance L between the contact point P and the rotation axis O. As a result, the pedaling force F (F = Fsp × L1 / Lp) when the first coil spring 41 is damaged is the set pedaling force (F = Fsp × L / L) by the urging force Fsp of only the second coil spring 45 that is not damaged. Lp).

When the holder 90 is tilted in the direction 200 of FIG. 11 or between the directions 100-200, the locking portion 571 of the hook 511 and the rod 531 come into contact with each other as shown in FIG. The locking portion 581 of the hook 521 and the rod 54 do not contact each other.
At this time, an anti-spring rotor 70 side force that restricts the movement of the holder 90 acts on the hook 511. Therefore, as in the case where the holder 90 is tilted in the direction 100 of FIG. 11, the action point Q is the same position as the contact point P, and the shortest distance L1 between the action point Q and the rotation axis O is the contact point P and the rotation axis. It is the same as the shortest distance L from O. As a result, the pedaling force F when the first coil spring 41 is damaged is the same as the set pedaling force by the biasing force Fsp of only the second coil spring 45 that is not damaged.

When the holder 90 is tilted in the direction 300 in FIG. 11 or between the directions 100-300, the locking portion 581 of the hook 521 and the rod 541 come into contact with each other. The locking portion 571 of the hook 511 and the rod 531 do not contact each other.
In this case as well, the pedal force F when the first coil spring 41 is damaged is the set pedal force by the urging force Fsp of only the second coil spring 45 that is not damaged, as in the case where the holder 90 is tilted in the direction 100 of FIG. It will be the same.

  When the holder 90 is tilted in the direction 200-400-300 in FIG. 11, as shown in FIG. 13, the holder 90 abuts at two locations, the abutment point P and the abutment point P1. For this reason, the action point Q is an intermediate position between the contact point P and the contact point P1. Therefore, the shortest distance L2 between the action point Q and the rotation axis O is smaller than the shortest distance L between the contact point P and the rotation axis O. As a result, the pedaling force F (F = Fsp × L2 / Lp) when the first coil spring 41 is damaged is smaller than the set pedaling force (F = Fsp × L / Lp) by only the second coil spring 45 that is not damaged. Become.

  Also in the second embodiment, when the first coil spring 41 is damaged and the holder 90 is tilted between the direction 200, the direction 300, or the direction 200-100-300, the pedaling force F is not damaged. This is the same as the set pedaling force by only the urging force Fsp. For this reason, in the accelerator device according to the second embodiment, the hysteresis characteristic when the first coil spring 41 is damaged is the same as the set hysteresis characteristic due to the urging force Fsp of the second coil spring 45.

  On the other hand, the pedaling force F when the holder 90 tilts in the direction 200-400-300 is smaller than the set pedaling force by the biasing force Fsp of only the second coil spring 45 that is not damaged. Therefore, the hysteresis characteristic at this time shows a pedaling force smaller than the set hysteresis characteristic by the urging force Fsp of the second coil spring 45.

  Also in the accelerator device according to the second embodiment, since the regulating means 6 is provided between the contact point P and the rotation axis O, the shortest distances L1 and L2 between the action point Q and the rotation axis O are set to the contact point P. The shortest distance L between the rotation axis O and the rotation axis O can be set. For this reason, the accelerator apparatus 1 has a pedaling force when one of the first and second coil springs 41 and 45 is damaged, less than a set pedaling force by the other first and second coil springs 41 and 45 that are not damaged. It can be. As a result, the driver can sense that part of the first and second coil springs 41 and 45 has been damaged.

Furthermore, in the accelerator device according to the second embodiment, the hooks 511 and 521 extend to the holder 90 side by the protrusion 74 of the spring rotor 70. For this reason, a large space is not required on the side of the holder 90 opposite to the first and second springs 41 and 51. Therefore, the physique of the accelerator device can be reduced.
(Third embodiment)

An accelerator device according to a third embodiment of the present invention is shown in FIGS. Components substantially the same as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
In the third embodiment, the restricting means 7 includes hooks 512 and 522 and rods 532 and 542. The hooks 512 and 522 and the rods 532 and 542 are provided closer to the rotation axis O than the hooks 51 and 52 and the rods 53 and 54 of the first embodiment.

  Also in the third embodiment, for example, when the first coil spring 41 is damaged and the holder 90 is tilted from the contact point P toward the counter-rotation axis O, the pedaling force F is applied only to the second coil spring 45 that is not damaged. This is the same as the set pedal force by the force Fsp. For this reason, in the accelerator device according to the third embodiment, the hysteresis characteristic when the first coil spring 41 is damaged is the same as the set hysteresis characteristic by the urging force Fsp of the second coil spring 45.

On the other hand, the pedaling force F when the holder 90 tilts toward the rotation axis O from the contact point P is smaller than the set pedaling force by only the second coil spring 45 that is not damaged. Therefore, the hysteresis characteristic at this time shows a pedaling force smaller than the set hysteresis characteristic by the urging force Fsp of the second coil spring 45.
As a result, the driver can sense that part of the first and second coil springs 41 and 45 has been damaged.

Furthermore, in the accelerator device according to the third embodiment, the restricting means 7 is provided at a position farther from the contact point P than the biasing means 5 of the first embodiment. For this reason, the force which acts when the rods 532 and 542 and the hooks 512 and 522 abut can be reduced. For this reason, durability of the control means 7 can be improved.
(Other embodiments)

In the embodiments described above, the case where the first coil spring is broken has been described as an example. On the other hand, even when the second coil spring is damaged, the present invention has the same effect.
Thus, the present invention is not limited to the above-described embodiments, and can be applied to various embodiments without departing from the gist of the present invention.

The side view of the accelerator apparatus by 1st Embodiment of this invention. FIG. 3 is a cross-sectional view taken along the line II-II in FIG. 3 of the accelerator device according to the first embodiment of the present invention. 1 is a cross-sectional view of an accelerator device according to a first embodiment of the present invention. The side view which shows the principal part of the accelerator apparatus by 1st Embodiment of this invention. The schematic diagram which shows the action | operation of the accelerator apparatus by 1st Embodiment of this invention. The bottom view of FIG. 4 VI direction of the accelerator apparatus by 1st Embodiment of this invention. The side view which shows the action | operation of the accelerator apparatus by 1st Embodiment of this invention. The side view which shows the action | operation of the accelerator apparatus by 1st Embodiment of this invention. The characteristic view of the accelerator apparatus by 1st Embodiment of this invention. The side view which shows the principal part of the accelerator apparatus by 2nd Embodiment of this invention. The bottom view of FIG. 10 XI direction of the accelerator apparatus by 2nd Embodiment of this invention. The side view which shows the action | operation of the accelerator apparatus by 2nd Embodiment of this invention. The side view which shows the action | operation of the accelerator apparatus by 2nd Embodiment of this invention. The side view which shows the principal part of the accelerator apparatus by 3rd Embodiment of this invention. The bottom view of the accelerator apparatus by 3rd Embodiment of this invention. The schematic diagram which shows the action | operation of the conventional accelerator apparatus. The characteristic view of the conventional accelerator apparatus.

Explanation of symbols

1: accelerator device, 2: accelerator pedal, 3: housing (supporting member), 4: biasing means, 5: regulating means, 11: bottom plate, 12: top plate, 13, 14: side plate, 16: connector, 32: Friction washer, 40: operation unit, 41: first coil spring (biasing means), 45: second coil spring (biasing means), 50: pedal arm, 51, 52: hook, 53, 54: rod, 60 : Pedal rotor, 67: Friction ring, 70: Spring rotor (rotor), 71: Rotating part, 74: Protruding part, 75: Convex surface, 76: Curved surface, 90: Holder, 91: Concave surface

Claims (4)

A support member attachable to the vehicle body;
An accelerator pedal that is rotatably supported by the support member and is depressed by a driver;
A biasing means that is locked at one end to the support member and biases the accelerator pedal in a direction opposite to the direction in which the accelerator pedal is depressed;
A rotor provided at an end of the accelerator pedal on the biasing means side;
A holder that engages the other end of the biasing means and abuts against the rotor in a relatively movable manner;
A regulating means provided between a contact point between the rotor and the holder and a rotation axis of the accelerator pedal, and regulating a movable range of the holder with respect to the rotor;
With
The restricting means sets a shortest distance between an operating point where the urging force of the urging means is applied to the rotor and the rotation axis to be equal to or less than a shortest distance between the contact point and the rotation axis. An accelerator device characterized by.   2. The accelerator apparatus according to claim 1, wherein the restricting means is provided on both sides of a plane passing through the contact point and perpendicular to the rotation axis.   The accelerator apparatus according to claim 1 or 2, wherein the restricting means includes a hook provided on one of the rotor and the holder and a rod provided on the other.   The accelerator device according to any one of claims 1 to 3, wherein the restricting means restricts a movable range of the holder with respect to the rotor when a part of the biasing means is damaged.

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